Voyager 1 is speeding along at about 57,600 kph (35,790 mph) -- fast enough to travel from the Earth to the sun three and a half times in one year.
Both Voyagers carry a gold record "greeting to the universe" (right) containing sounds and images selected to portray the diversity of life and culture on Earth.
Voyager 1 is escaping the solar system at a speed of about 523.6 million km per year, or about 1.4 million km per day and is now in interstellar space (as of April 2013).
Even at this tremendous speed, Voyager 1 will take at least 14,000 years (and maybe twice that or even longer) to emerge from the Oort cloud.
Did you know that the record is a 30-cm gold-plated copper disc? Together with a needle and playing instructions, it is mounted on the body casing and on it are recorded natural Earth sounds, 90 min of music, 115 pictures, and greetings in 60 languages.